Motor-door



C. C. TOMKiNSON.

MOTOR DOOR. APPLICATION FILED JAN. 24. i918.

Patented J an. 6, 1920.

2 SHEET$SHEET l- A TTORN E Y5 C. C. TOMKINSON.

MOTOR DOOR.-

APPLICATION FILED JAN-24,1918.

Patented Jan. 6

2 SHEET$SHEET 2- UmTEDsTATEs PATENT OFFICE.

CHARLES C. TOMKINSON, OF PLAINFIELID, NEW JERSEY, ASSIGNdR TOJOHN' EDWARD OGDEN, F MOUNTAINVILLE, NEW YORK.

MOTOR-DOOR.

Specification of Letters Patent.

Patented J an. 6, 1920.

Application filed January 24, 1918. Serial No. 213,561.

To all whom it may concern: I

Be it known that I, CHARLES C. TOMKIN- SON, a citizen of the United States of Amer- .ica, and a resident of Plainfield, Union county and State of New Jersey, have invented certain new and useful Improvements in Motor-Doors, of which the following'is a specification, reference being had to the accompanying drawings, forming a part thereof.

My invention relates to doors and actuating'mechanisms therefor and'especially to motor actuated doors, and its object is to provide a self-contained structure with the actuating, motor thereon and arranged to move with the door.

In order that my invention may be thoroughly understood I will now proceed to describe the same in the following specification, and then point out the novel features thereof in appended claims.

Referring to the drawings:

Figure 1 is a front elevation of a structure having a pair of large sliding doors made according to and embodying the invention.

Fig. 2 is a front elevation on a. larger scale, 0 a part of the motor mechanism of the doors shown in Fig. 1, with certain portions of the, structure broken away in order to more clearly show the construction.

Fig. 3 is a plan view of the parts shown in Fig. 2. I j

Fig. 1 is a sectional elevation of the structure of the door such as are shown in the preceding figures.

Fig. 5 is a view corresponding to Fig. 2, of a modified form of mechanism which also embodies this invention.

Like characters of reference designate corresponding parts in all the figures.

designates a building construction which is in this case a hanger for dirigible balloons. 11 designates tracks or rails laid across the front of this building, and 12 are overhead guides supported by the building above and parallel with the tracks 11.

The doors are designated by -13 and 14.

ese are supported upon the journals 15 of flanged wheels 16 on the tracks 11. 1818 are wheels mounted on vertical shafts projecting upwardly from the top of the door structures and bearing on the guides 12 above the doors. 19 is an operators platform projecting horizontally from the door.

Aflixed to the journals 15 are worm wheels 20 with which worms 21 on a shaft 22 engage. This shaft may be made in sections joined by couplings 23. 24 is a reversible electric motor mounted on the door structure. Its

22 bysuitable transmission gearing 2'5. 26 is an electromagnetic brake on the motor shaft, the details of which are not shown or described as they form no part of this invention. motor controller is shown at 27 and it is to be understood that this is connected by suitable circuits with the motor 24 and with the brake 26.

Electric current is brought to the controller, motor and brake from contact rollers 30'and 31 on the upper part of each door structure which bear upon insulated contact strips 32 and 33 supported on the structure 10 between the guides 12.

Before specifically describing the mechanism illustrated in Fig. 5, the operation of this device will be shown. In this case an operator standing on the platform 19 is in a convenient position to manipulate the controller 27. By means of this device he releases the brake 26 and causes the motor 24 to be energized and to rotate. The rotation of the motor is transmitted tothe shaft 22 and the worms 21 through the gearing 25 and the worms drive the journals 15 and the Wheels 16 and thus move the door in the desired direction. The operator may stop the motor and apply the brake at will and thus bring the door to rest whenever it has reached a desired position. By reversin the motor the door is moved back.

The worms and worm gears are preferably of low pitch so that they are not reversible. Thus the doors will stand wherever they are stopped. The brake then is not depended upon to hold the doors in useful in stopplace, but when provided is ping the movement of the doors.

Fig. 5 the motor 24 has a sprocket pmion 40 on its shaft-which is connected by a chain 41 with a. sprocket of the journals 15. The operation of this arrangement is obvious as-it is similar to that already described. In the installation shown there are two doors arranged to but it is within the knowledge of a skilled mechanic or electrician to connect them to move simultaneously in opposite directions. The doors shown are of enormous size, but.

wheel 42- on one be operated separately,

shaft is connectedwith the shaft of course the invention may be applied to smaller doors and to doors of difi'erent types, and I intend no limitations other than those imposed by the appended claims.

What I claim is:

1, A hanger door, a stationary rail, a plurality of wheels with those farthest apart widely separated arranged to run on the track and upon which the door is supported, worm gears connected with a plurality of said wheels, at relatively long driving shaft spanning the distance between said widely separated wheels, worms on said shaft in mesh with said gears, a motor, and a brake therefor, transmission gearing between the motor and the drivin shaft, and a manually operated controller or the motor and the brake.

2. A hanger door, a stationary rail, a plurality of wheels with those farthest apart widely separated arranged to run on the track and upon which the door is supported,

, low pitch worm gears connected with said wheels, a driving shaft, worms thereon in mesh with said gears, a reversible electric motor, an electromagnet c brake therefor,

transmission gearing between the motor and the driving shaft, and a manually operated controller on the door for the motor and the brake.

3; Controlling means for hangar doors comprising a supporting track, a carriage on which the door is mounted and provided with a plurality of widely separted wheels running on said track, an electric motor mounted on the carriage and connected with the supporting wheels by irreversible gearing, spaced guide rails at the top of the door, rollers at the upper edge of the door engaging said guide rails, conductor rails between. the guide rails, brushes on the top of the door engaging said conductor rails, a controller for the motor mounted on the "car- -riage, electrical connections between the controller and motor and an operbrushes, ators platform on the carriage, said controller.

In witness whereof, I have my hand this 18th day of J anuary, 1918.

CHARLES C. TOMKINSON.

Witness:

I. B. MOON.

adjacent hereunto set 

